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Premises and Equipment - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
item
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Premises and Equipment      
Depreciation expense $ 10,000 $ 8,400 $ 7,300
Disposal of premises and equipment 2,300 7,000 13,700
Gain on sale of fixed assets 148 1,674 3,768
Impairment on fixed assets related to banking center consolidations $ 200 $ 0 1,600
Number of banking centers classified as held-for-sale | item 5    
Banking center classified as held-for-sale $ 13,400   $ 6,000